3.9    SELF TEST:

  1. One angle of a parallelogram is  70°. Find the measures of the remaining angles of the parallelogram2n(2 mk).
  2. In the given figure PR is a diagonal of the parallelogram PQRS.  (4mk)

( i )  Is PS   =   RQ      Why.

( ii )      Is   SR              =          PQ.         Why.

( iii )     Is   PR             =          RP.          Why.

( iv )     Is Δ PSR          ≌         Δ RQP.    Why.

  1. The perimeter of a parallelogram is 150 cm. One of its side is greater than the other by 25 cm. Find length of all sides of the parallelogram.(2mk)
  1. Lengths of adjacent sides of a parallelogram is 3 cm and 4 cm. Find its perimeter.(2mk)
  2. In a parallelogram, the ratio of the adjacent sides is 4:  5 and its perimeter is 72 cm then, find the  sides of the parallelogram.(2mk)
  3. The adjacent figure HOPE is a parallelogram. Find the angle measure x, y and z. State the properties you use to find them. (3mk)

  1. Find value of x and y in the following figures.

( i ) where ABCD is a parallelogram.(4mk)

( ii ) where PQRS is a rhombus.

  1. Find x, y, z in the given parallelogram ABCD.  (2mk)